1Q4K	Transferase	date	Aug 04, 2003
title	The Polo-Box Domain Of Plk1 In Complex With A Phospho-Peptid
authors	K.Cheng, E.D.Lowe, J.Sinclair, E.A.Nigg, L.N.Johnson
compound		source
Molecule: Serinethreonine-Protein Kinase Plk Chain: B, A, C Fragment: Polo Box Domain Of Human Plk1 Synonym: Plk-1, Serine-Threonine Protein Kinase 13, Stpk13 Ec: 2.7.1.- Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Plk1 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: B834 (De3) Plyss Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgex-6p1
Molecule: Phospho-Peptide Sequence Met.Gln.Ser.Pthr.Pro.Leu Chain: D, E, F Fragment: Phospho-Peptide Engineered: Yes Mutation: Yes		Synthetic: Yes Other_details: Chemical Synthesis
symmetry	Space Group: P 1	R_factor 0.245 R_Free 0.312
crystal cell	length a length b length c angle alpha angle beta angle gamma 57.071 56.888 85.050 91.45 103.21 118.50
method	X-Ray Diffraction	resolution	2.30 Å
ligand	TPO	enzyme	Transferase E.C.2.7.1 BRENDA
related structures	by homologous chain: 1Q4O
Primary reference	The crystal structure of the human polo-like kinase-1 polo box domain and its phospho-peptide complex., Cheng KY, Lowe ED, Sinclair J, Nigg EA, Johnson LN, EMBO J 2003 Nov 3;22(21):5757-68. PMID:14592974

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (119 Kb) [Save to disk] Biological Unit Coordinates (1q4k.pdb1.gz) 40 Kb Biological Unit Coordinates (1q4k.pdb2.gz) 39 Kb Biological Unit Coordinates (1q4k.pdb3.gz) 38 Kb LPC: Ligand-Protein Contacts for 1Q4K CSU: Contacts of Structural Units for 1Q4K Likely Quarternary Molecular Structure file(s) for 1Q4K Structure Factors (507 Kb) Retrieve 1Q4K in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1Q4K from S2C, [Save to disk] Re-refined 1q4k structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1Q4K in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1Q4K

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1Q4K, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1q4ka1, region A:372-500 [Jmol] [rasmolscript] [script source]     - Domain d1q4ka2, region A:501-593 [Jmol] [rasmolscript] [script source]     - Domain d1q4kb1, region B:371-500 [Jmol] [rasmolscript] [script source]     - Domain d1q4kb2, region B:501-594 [Jmol] [rasmolscript] [script source]     - Domain d1q4kc1, region C:372-494 [Jmol] [rasmolscript] [script source]     - Domain d1q4kc2, region C:503-593 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1q4k_D] [1q4k] [1q4k_F] [1q4k_A] [1q4k_C] [1q4k_B] [1q4k_E] SWISS-PROT database: [P53350] Domain organization of [PLK1_HUMAN] by SWISSPFAM

Other resources with information on 1Q4K

Community annotation for 1Q4K at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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